37136738321 has 2 divisors, whose sum is σ = 37136738322. Its totient is φ = 37136738320.

The previous prime is 37136738293. The next prime is 37136738351. The reversal of 37136738321 is 12383763173.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27441579025 + 9695159296 = 165655^2 + 98464^2 .

It is an emirp because it is prime and its reverse (12383763173) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37136738321 - 2²² = 37132544017 is a prime.

It is not a weakly prime, because it can be changed into another prime (37136738351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18568369160 + 18568369161.

It is an arithmetic number, because the mean of its divisors is an integer number (18568369161).

Almost surely, 2^37136738321 is an apocalyptic number.

It is an amenable number.

37136738321 is a deficient number, since it is larger than the sum of its proper divisors (1).

37136738321 is an equidigital number, since it uses as much as digits as its factorization.

37136738321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 44.

The spelling of 37136738321 in words is "thirty-seven billion, one hundred thirty-six million, seven hundred thirty-eight thousand, three hundred twenty-one".